I've read people on here saying recently that they don't think the song 'beautiful' fits on the album relapse, and that it sticks out from the rest of the material. When I first listened through relapse, 'beautiful' did indeed strike me as being very different thematically and in how it sounded compared to the other tracks.
I don't want to say that it is right or wrong for the song to be there, but I can perhaps provide justification for why it was included. There is a poem called 'Vultures' by a guy called Chinua Achebe which describes how even in the darkest of places there still exists a shred of warmth. The poem talks about two vultures, and how even though they are ugly creatures that feed on rotting flesh they find comfort and companionship with one another. It also uses the example of a concentration-camp guard, who after committing horrendous acts of evil at his work, stops on his way home to buy a chocolate for his beloved child. It is showing how there is always a chink of 'good' in everything, however 'bad' that thing might be overall. (I use the terms 'good' and 'bad' loosely here)
The line from the poem 'praise bounteous providence if you will that grants even an ogre a tiny glow-worm (of) tenderness' is one that I think can be applied to the album Relapse. In amongst the deranged and maniacal exploits of eminem's serial killer persona there is still a morsel of good; the song 'beautiful'. Can 'beautiful' be viewed as the 'glow-worm of tenderness' in the ogre that is the rest of the album? In saying 'don't let em say you ain't beautiful' is eminem not convincing himself that he can escape the dark places that drugs have taken him to? Perhaps the song was supposed to be the faint light at the end if the tunnel, and for that reason, perhaps it's inclusion on the album is justified.